Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/17692
Title: Practical on-site measurement of heat strain with the use of a perceptual strain index
Authors: Chan, APC 
Yang, Y
Keywords: Construction workers
Heat stress
Perceptual strain
Physiological strain
Stressors
Issue Date: 2015
Publisher: Springer Verlag
Source: International archives of occupational and environmental health, 2015 How to cite?
Journal: International Archives of Occupational and Environmental Health 
Abstract: Objectives: There have been increased interests in research on quantifying heat strain of construction workers and formulating corresponding guidelines for working in hot weather. The aim of this study was to validate a subjective measurement tool, the perceptual strain index (PeSI), for measuring heat strain in real-work settings. Methods: A total of sixteen construction workers were invited to participate in the field surveys. Empiric-based human monitoring was carried out with simultaneous micrometeorological (wet-bulb globe temperature, WBGT), physiological (heart rate, HR), and perceptual (perceived exertion, RPE; thermal sensation, TS) measurements throughout the test. The relative heart rate (RHR), the physiological strain index (PSIHR), and the PeSI were then calculated accordingly. Results: The PeSI exhibited moderate correlations with WBGT and RHR (r = 0.42 and 0.40, respectively), which indicated the PeSI was sensitive to the variants of WBGT and RHR. The results of regression analysis indicated that the PeSI changed in the same general manner as the PSI<inf>HR</inf>, with a relatively large determination coefficient (R2 = 0.67). The established perceptual strain zone illustrated that the PeSI ranging from 7 to 8 would be the exposure limit of construction workers in hot weather. Conclusion: The PeSI is a simple, robust, reliable, and user-friendly tool for heat strain assessment in occupational settings. The perceptual strain zone will provide practical guidelines for on-site heat strain monitoring for construction workers.
URI: http://hdl.handle.net/10397/17692
ISSN: 0340-0131
DOI: 10.1007/s00420-015-1073-7
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